hipwell



(No Model.) 2 Sheets-Sheet 1. T. HIPWELL.

ARGAND LAMP.

No. 534,103. Patented Feb. 12.1895.

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2 sheerssheen 2.

T. HIPWBLL.

(No Model.)

ARGAND LAMP.

Patented Feb. 12, A1895.

TH: Nonms PETERS no. Pumoluwo, wAsmrzmoN n c -Nm) -l STATE-S PATENT OFFICE, y

THOMAS HIPWELL, OF LONG ISLAND OITY, ASSIGNOR TO THE MANHATTAN BRASS COMPANY, OF NEW YORK, vN. Y.

ARGAN D LAM P.

SPECIFICATION forming partof Letters Iatent No. 534,103, dated February 12, 1895.

Application filed March 12, 1894. Serial No,.503,259 (No model.)

To a/ZZ whom it may concern,.-

Be it known that I, THoMAs HIPWELL, a citizen of the United States, residing at 'Astoria, (Long Island Oity,) in the ccuntyof an Improvement in Argand Lamps, of which the following is a specification.

This improvement-is vmade for facilitating the insertion or removal of the lamp wick, for

v to either introducing the wick over the wick raising cylinder or for cleaning the parts, so that by this improvement the wick andthe wick holding cylinder can be introduced or removed with facility, and the other parts of the `15 lamp can be manufactured without the Wick raising devices being permanently connected therewith. Y p v I employ a chimney holder which can be raised by a partial rotation andheld eitherin an elevated or depressed position with reliability, and I construct the draft regulating devices for the air tube of the Argand lamp with reference to preventing the llame being influenced by lateral currents of air acting at z5 the lower end of the air tube.

In the drawings, Figure 1 is a verticalsection representing myimprovement as applied to an Argand lamp of the type usually known as a German student lamp. Fig. 2 is a detached view of the wick holding device. Fig. 3 is an end view of the Wick holder, and Fig. 4 is a section of the burner with the chimney holder elevated and with parts of the wick tube and air tube removed.

The reservoir A is to be of any desired size or character. I have shown the same as connected by the tube B to the wick cylinder C, butin standard or hand lamps the reservoir will usually occupy theposition shown by the dotted lines A', Fig. l, and by full lines in Fig. 4. In either instance the air tube D passes up within the wick E and is open at the bottom f the oil holding vessel, and usually a perforated thimble or delector F is provided at the upper end of the air tube, and an oil lwell G at the bottom of the air tube D serves to catch any oil that may pass down the air tube, and this oil well is usually connected by a screw to the projecting lower 5o end of the air tube. v

In lamps of this character the flame is Queens and State of New York, have invented y sometimes rendered unsteady, because the air passing up through the central air tube moves faster at one side than the otheras it may be influenced by external currents of air coming vin through the openings at the upper end of the oil well. I find that the perforated cylindrical air guide H connected to the bottom of the oil cup and of Va smaller size than the air tube and extending up into the lower end 6o of said air tube, serves the purpose of an equalizer to give a uniform and vertical direction to the currents of` air passing up through the air tube and thereby' render the llame steady. c i Y Y The wick holder I is made as au open cylinder or'frame having upwardly7 projecting springs 2 with claws 3 at the upper ends standing outwardly and engaging the wick, and these springs 2 withdraw the claws from 7o 'the wick when the wick holder is raised so that the springs come above the top end of the air tube D, and when the wick holder is forced downwardly, the air tube spreads the springs 2 and causes the claws3 to hold firmly 75 into the wick. This part of the wick holder is similar to that represented in Letters Patent No. 488,968, dated December 27, 1892.

It has heretofore been found difficult to connect the wick raising rod K with the Wick Se holder I in a reliable manner and at the same time to allow of these parts being separated with facilitywhen the wick holder is elevated.

To accomplish this object I provide a slotted case L for the wick raiser rod K and connect with the wick holder I a spring latch 4 having a double inclined end that passes into the slot of the case L, and also a hole for the reception of the right angled end 5 at the bottorn of the wick raising rod K, so that the 9o wick holder I and rod K are reliably connected and the wick can be raised or lowered by acting upon the rod K, and when it is desired to disconnect the rod K and holder I, itv

is only necessary to draw the holder I to its extreme upper position so that the incline at the end of the latch 4 coming in contact with the metal at the upper end of the slot in the case L, forces the spring latch toward the wick and out of the slotted case, and in so doroc ing the end 5 of the rod K is separated from the hole in the spring latch, and the rod can can be inserted over and around said holder before it is returned to its position over the air tube D.

I remark that it is usually advantageous to cut the lower end of the wick longitudinally so that the lower end of the wick may project downwardly below the lower end of the wick holder, so that the oil may be drawn up by the wick until a larger portion of the wick is consumed than is possible w-hen a short wick is made use of.

Around the wick E is the wick tubeNand the same is connected with the lower end of the air distributer O, the base of which air distributer sets into the top of the wick cylinder C in the German student lamp, or into the collar at the top of the reservoir in an or dinary hand lamp, and the parts are connected by a pin and bayonet groove.

The chimney holder or rest Pis usually provided with springs 6 for holding the chimney, and in lamps that have heretofore been constructed this chimney holder could beraised or lowered, and in some instances inclined or diagonal slotted plates have been attached to the lower side of the chimney holder` and passed within the air distributer, there being inwardly projecting pins passing intothe slots so that the chimney holder is raised or lowered by its partial rotation.

I make use of the slotted inclined plates 7 through which the stationary pins 8 pass, and I continue the upper and lower ends of the slotsin the respective inclined plates horizontally so that the weight of the chimney will be sustained by the pins 8 in the horifzontal portions of the slots when the chimney is raised, and when the chimney has been lowered to position the pins in the horizontal portions at the upper ends of the slots hold the chimney down firmly in its position, so that it can not work loose until after the chimneyholder has received a'partial rotation.

In burners of this character it is important to make use of sheet metal that is comparatively thin, not only for lessening the expense but for lessening the heat which is conducted by the mass of metal down to the reservoir, and the slotted inclined plates are liable to bend and become inoperative. To avoid this diftlculty I employ a ilanged ring 9 connecting the lower ends of the slotted inclined plates 7, such iianged ring setting closely within the air distributer so as to be supported by the same and form a firm connection between the lower ends of the slotted plate 7, and this iianged ring being closely adjacent to the inner surface of the perforated air distributer, serves to keep such air distributer clean and free from carbonaceous deposits by the ring moving upwardly and downwardly when the chimney holder is elevated for lighting the wick.

I claim as my inventionl. The combination with the air tube in an Argand burner, of a wick holder sliding on such air tube, a spring" connected with the lower end of the wick holder and extending downward and then bentnpwardly and forming a latch, a slotted case iu which the outer end of the springlatch slides, and a Wick raising rod within the slotted case and having a bent end passing into a hole in the spring latch for raising and lowering'the wick holder and wick, the spring latch and wick raising rod being separable for allowing the wick holder to be removed from around the air tube, substantially as set forth.

2. The combination with the air tube in an Argand burner, of a wick holder sliding on such air tube, a spring latch connected with the lower end ot the wick holder, a slotted casein whiclrtheouter end'of the spring latch slides, and a'wick raising rod within the slotted case haviuga bent end passing into a holein the spring latch andi the upper end of the spring latch havinga double incline by which the latch is separated from the wick raising rodbythe contact of thelatchwith the metal at the end ot' the slot of the case, substantially as set forth.

THOMAS HIPWELL.

Witnesses:

JOHN J'. WRENN, RL TURNER. 

